Finding the Fourth Proportional to 56,600.97, 78,110.82 and 31,108.05

Step by Step Solution

1. Step 1: Write the proportion equation
   56,600.97 : 78,110.82 = 31,108.05 : x
2. Step 2: Convert to fraction form
   56,600.97/78,110.82 = 31,108.05/x
3. Step 3: Cross multiply
   56,600.97x = 78,110.82 × 31,108.05
4. Step 4: Simplify right side
   56,600.97x = 2,429,875,294.10
5. Step 5: Solve for x
   x = 2,429,875,294.10/56,600.97
6. Step 6: Final answer
   x = 42,929.92